Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017
Emissions and long-range transport of mineral dust and combustion-related aerosol from burning fossil fuels and biomass vary from year to year, driven by the evolution of the economy and changes in meteorological conditions and environmental regulations. This study offers both satellite and model pe...
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ftosti:oai:osti.gov:1592420 2023-07-30T04:05:39+02:00 Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017 Yu, Hongbin Yang, Yang Wang, Hailong Tan, Qian Chin, Mian Levy, Robert C. Remer, Lorraine A. Smith, Steven J. Yuan, Tianle Shi, Yingxi 2023-06-30 application/pdf http://www.osti.gov/servlets/purl/1592420 https://www.osti.gov/biblio/1592420 https://doi.org/10.5194/acp-20-139-2020 unknown http://www.osti.gov/servlets/purl/1592420 https://www.osti.gov/biblio/1592420 https://doi.org/10.5194/acp-20-139-2020 doi:10.5194/acp-20-139-2020 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.5194/acp-20-139-2020 2023-07-11T09:39:01Z Emissions and long-range transport of mineral dust and combustion-related aerosol from burning fossil fuels and biomass vary from year to year, driven by the evolution of the economy and changes in meteorological conditions and environmental regulations. This study offers both satellite and model perspectives on the interannual variability and possible trends of combustion aerosol and dust in major continental outflow regions over the past 15 years (2003–2017). The decade-long record of aerosol optical depth (AOD, denoted as τ ), separately for combustion aerosol ( τ c ) and dust ( τ d ), over global oceans is derived from the Collection 6 aerosol products of the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard both Terra and Aqua. These MODIS Aqua datasets, complemented by aerosol source-tagged simulations using the Community Atmospheric Model version 5 (CAM5), are then analyzed to understand the interannual variability and potential trends of τ c and τ d in the major continental outflows. Both MODIS and CAM5consistently yield a similar decreasing trend of –0.017 to –0.020 per decade for τ c over the North Atlantic Ocean and the Mediterranean Sea that is attributable to reduced emissions from North America and Europe, respectively. On the contrary, both MODIS and CAM5 display an increasing trend of +0.017 to +0.036 per decade for τ c over the tropical Indian Ocean, the Bay of Bengal, and the Arabian Sea, which reflects the influence of increased anthropogenic emissions from South Asia and the Middle East in the last 2 decades. Over the northwestern Pacific Ocean, which is often affected by East Asian emissions of pollution and dust, the MODIS retrievals show a decreasing trend of –0.021 per decade for τ c and –0.012 per decade for τ d , which is, however, not reproduced by the CAM5 model. In other outflow regions strongly influenced by biomass burning smoke or dust, both MODIS retrievals and CAM5 simulations show no statistically significant trends; the MODIS-observed interannual variability is ... Other/Unknown Material North Atlantic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Indian Pacific Atmospheric Chemistry and Physics 20 1 139 161 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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ftosti |
language |
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54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Yu, Hongbin Yang, Yang Wang, Hailong Tan, Qian Chin, Mian Levy, Robert C. Remer, Lorraine A. Smith, Steven J. Yuan, Tianle Shi, Yingxi Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017 |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Emissions and long-range transport of mineral dust and combustion-related aerosol from burning fossil fuels and biomass vary from year to year, driven by the evolution of the economy and changes in meteorological conditions and environmental regulations. This study offers both satellite and model perspectives on the interannual variability and possible trends of combustion aerosol and dust in major continental outflow regions over the past 15 years (2003–2017). The decade-long record of aerosol optical depth (AOD, denoted as τ ), separately for combustion aerosol ( τ c ) and dust ( τ d ), over global oceans is derived from the Collection 6 aerosol products of the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard both Terra and Aqua. These MODIS Aqua datasets, complemented by aerosol source-tagged simulations using the Community Atmospheric Model version 5 (CAM5), are then analyzed to understand the interannual variability and potential trends of τ c and τ d in the major continental outflows. Both MODIS and CAM5consistently yield a similar decreasing trend of –0.017 to –0.020 per decade for τ c over the North Atlantic Ocean and the Mediterranean Sea that is attributable to reduced emissions from North America and Europe, respectively. On the contrary, both MODIS and CAM5 display an increasing trend of +0.017 to +0.036 per decade for τ c over the tropical Indian Ocean, the Bay of Bengal, and the Arabian Sea, which reflects the influence of increased anthropogenic emissions from South Asia and the Middle East in the last 2 decades. Over the northwestern Pacific Ocean, which is often affected by East Asian emissions of pollution and dust, the MODIS retrievals show a decreasing trend of –0.021 per decade for τ c and –0.012 per decade for τ d , which is, however, not reproduced by the CAM5 model. In other outflow regions strongly influenced by biomass burning smoke or dust, both MODIS retrievals and CAM5 simulations show no statistically significant trends; the MODIS-observed interannual variability is ... |
author |
Yu, Hongbin Yang, Yang Wang, Hailong Tan, Qian Chin, Mian Levy, Robert C. Remer, Lorraine A. Smith, Steven J. Yuan, Tianle Shi, Yingxi |
author_facet |
Yu, Hongbin Yang, Yang Wang, Hailong Tan, Qian Chin, Mian Levy, Robert C. Remer, Lorraine A. Smith, Steven J. Yuan, Tianle Shi, Yingxi |
author_sort |
Yu, Hongbin |
title |
Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017 |
title_short |
Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017 |
title_full |
Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017 |
title_fullStr |
Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017 |
title_full_unstemmed |
Interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by MODIS retrievals and CAM5 simulations during 2003–2017 |
title_sort |
interannual variability and trends of combustion aerosol and dust in major continental outflows revealed by modis retrievals and cam5 simulations during 2003–2017 |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1592420 https://www.osti.gov/biblio/1592420 https://doi.org/10.5194/acp-20-139-2020 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.osti.gov/servlets/purl/1592420 https://www.osti.gov/biblio/1592420 https://doi.org/10.5194/acp-20-139-2020 doi:10.5194/acp-20-139-2020 |
op_doi |
https://doi.org/10.5194/acp-20-139-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
1 |
container_start_page |
139 |
op_container_end_page |
161 |
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1772817708349390848 |